Process of separating fine suspended particles from air and other gases.



No. 853.619. 'l PATBNTBD MAY 14. 19o?. w. J. BALDWIN. PROCESS or SEPARDTING FIND SUSPENDED PARTIGLDS PROM AIR AND OTHER K GASES.

PYLIOATIGN ILBD JUH" 8, 1.1393` M E w qu fam UNITED STATES PATENT OFFIGEi y WiLLniM J. BALDWIN, or NEW YORK, N. Y. Process or semaines sie sesrrssrn motifs from na om omas fnsrs.

No. 853,619. v specification cf Letters raient. Patentes may 14,19o7., l Y Appleman sie@ .1ste afirma. solo Hu. 159.917.

`To Acall whom, "it my concern,.- pitals, and some other public or quasi-puhli Beit known that I, WILLIAM J BLDWIN, institutions. A a citizen of the United States of Americs` x[y invention is the reverse of the system and a resident of the borough of Brooklyn, above described, in that it effects the separain the city of New York and State of vKew tion of the suspended particles by blowingv 5o ork, have invented certainA new and useful them athighrelocity, with a part of the air 'Improvements in Processes of Separating or gas'tlnough a screen which is in the ironic*- Z Fine Sus ended Particles fron; ir and other diete vicinity of the blower Where the re-Y Geses, o which the following is a 'speeilcelccitvAo-the airishigliest. The screen is of i zo tion. smal dimensions, 'is made of such materials 65 This invention relates to improvements in and strength as to readily resist thev air or r processes of separating fine suV ended partigas pressures without bursting, and is prefcles from air and other gases; W 'ch are to be ably in the blower cese, where itfis protected used for ventilation, heating and other purfrom injnry.V

osos, as dust from air, and unconsmned car- The air or ges which remains inside the 'yo on from smoke'. .Y screen, being freed from the suspended arti- The present practice, particnlsrly as a' cles, ilcws away to the place `of use, whi e the plied in ventilation and heating, may lli-)c air or gas which passed through the screenv vbriefly described as follows: At some distance with the suspended particles may be caused 2o from the blowerscreens oflerge area are placed to low over or past suitable devices, such as 75 across large chambersA or passages, in vwhich a body of Water, by'wiiich the said suspended thevelocity of the Aair is very small so as not artieles'sre arrested and depositedrand mail to endanger the bursting of the screens, or nelly be mingled with the air or gas Whic the carrving of the suspended particles did not pass through the screen, and may go Y through there, the purpose of such apparatus with it to the place of use; or'the air orgas=o 1 Vbeing to arrest the dust, and pass the air which epassed through the screen with the hrough the sereens'freed from dust. As the snspen ed particles may be allowed to blow gently moving air blows through the screens away without being used, the suspendedspartlcles are arrested by the l To'the incre clearly explain my inrention screens, which are of a mesh line enough to have iiinstrated a convenient forni of appa- '85v prevent the passage of the particles, endthe-'- t io 'air freed from the-particles is delivered'by suitable ducts, registers and like devices to efterdescribed, but I do not herein claim the the places of use. In 'such systems the nse a parstns,'tl1e same being claimed nmy ap-V Y of large chambers or passa es inwhioh to Y,pcetion for .Letters vPatentol' the United 9o f set .the screens is unavoidale, because the States, filed. June 3, 1903, Serial number high velocityof the air as it 'leaves the 159,918. uwer must bemeduoed to so low a velocity Referring to said drawings, Fiure 1 1s a as will not burst the screens, or carry the horizontal section and plan' of 'a lower for 40 dnst'through them, and the result is the use o rating -rny process of dust separation 95 of chambers or passages of vefygreat .,area, ig. 2 1's a side vertical section of the same. to insure relatively very low velocity of the Hereinafter using the term gas to ineen air ati-:the screensgj But. the reqtrirement'of air, or other gases", andreferr' to the reifer-` Y legge areas,y necessitates giving' up ence letters on said drawin As the fanof a `much v u able space in the basements of centrifugal blower, ron "e shaft B, and in a me bm dings to these chambers orpassages, end bloyrer case C, which said case may be of any involveslarge' expense in their construction. desired slzc andvsbape, as either thefordin Thc'freat screensinecessaryin such :systems blower case as shoWn, or the walls of the arf1 a so expensive and liable to injury, es room in which the fan is placed; and gas cn- 59 we as cambi-ous, and must t,be cleaned tering by the centrifugal ets c aim inges :o5 frequenta', andere difficult to clean.' The with high veioeityn theV4 rmeable disresuit is at the urifyinc the nir used in ph'regm D, whiclnis preferab y a galvanized Ventilating and eating om dust is vnow stoel or iron wiremesli, of such coarseness as' only attempted in those cases where the exto Tet the dust or other sus nded particles pense is 'a secondary consideration, as in hospass through. The screenl j is preferably of :1 9 Y .u i Il A f f the particles and to prevent z which `aire partly immersed in commingled with the gas .the said particles ma 4now freed from volute shape, as shown, as is also thc blower ease "C, and is arranged in the said case with a space E between it and the walls of the case, as by securing it to flanges f. When the gas at..higl"ivelocity impinges on a'sjiereinbefore stated, a part ol thc gas, and aliipp practically all, the suspended particles are. 'b own through the screen, while the reniainin part ol' the gas, now freed from the suspeni ed particles, llows around the screen and to the outlet H, whence it passes by suitable ducts to the places of use. The gas which passed through the screen D with the particles llows downward in the space between the screen and the wall of the blower case carrying suspended articles with it, and e arrested and deposited by any suitab e means, as a body of water G in a vessel or chamberin the lower part of the blower case: To aid in arresting the rapidly irom too greatly agitating the :J J are preferably employed, the water as shown, and arranged across the direction of the air movement. After the suspended particles have been caught and deposited iii the water, the 'gas in the space E above the water, l the suspended particles, passes by the o ening K, which is controlled y dampers'L i, into the body ofgas from which the particles were originally separated, the comminglin taking place at a point away from the inline( iate vicinity of the screenl), so th'at the coiiimingling volumes of gas will not again be blown through the screen. From the opening K the commingled gas flows through theoutlet H and suitable4 ducts or passages to the' laces of ilse;

Instead of mingling the gas which passed through the screen with that which did not, it may be allowed to blow away through a moving gas Water, 'ds

suitable outlet as N, or it may blow directly iinto atmosphere through t-lie screen. For, it is not essential to my process that the gas Whichrst passed throu h thc screen with the suspended particles slliould afterward be which did not 'pass through, and- I can of course use only the gas which did not pass through the screen for ventilation and heating oriot'her purposes, but economy of ower in the blowers usually makes it desirable to use all the gas delivered by the blowers for the Ventilating, heating,

the screen 1),.

moving kthe remaining or other purpose. Said outlet opening. i

Now having described my improvements, l claim as my invention,

l. The process .of separating suspended particles from igases, which consists in impeling a gas at a ugh velocity against a permeable diaphragm arranged in` closed chamber:

and having orifices suiciently lar e to perl mit of the passageof the suspen'ilged particles, and thereby forcing the said particles and a part of the gas through said diaphragm, l and removing the remaining portion of the I gas from the immediate vicinity of said dial phragiii and particles. K

2. The process of separating suspended particles from gases, which consists in imfpell ling the gas at relatively high velocity against N will be provided with a suitable valve to regulate thel a permeable diaphragm arran edi-iii closed.

chamber and which is provide -withorifioes sufficiently large to permit said particlesto pass through, Vand thereby forcing said cles and a part of the gas through sai( 'diahragm, arresting said particles after they have assed through fthe said diaphragm, where y their remixing with.the did not pass through 1s prevente y art of the gas :from the vicinity of the said diaphragm and arrested particles, substantially as described..

3. The process of 1 articles from gases, which consists in im l ling the gas at relatively high velocity against a permeable diaphragm arranged in closedcharnber and which is provide( with orifices sufficiently large to pcrmitvsaid pass through, and thereby forcing said 1 cles and a partof tliegas through'sai diabragm, arresting said particles by a body of iquid after `they havel passed through said i diaphragm, whereby they are prevented from i returning into the gas, and mixing gas which i passed tliroii h'1 t ie diaphragm and '.from l which thc saii`A` particles have been se arated l with the remaining part ,of the gas w iichdid l not pass through the said diaphragm, subi stantially asilescribed. y l` Signed at New York city this 23rd day of l May i903. v l WILLIAM J. BALDWIN.- l 'i'tnesses: i Davin WALTER BROWN, l CHARLES WEIN.

artil separating suspendld v particles to arti- 

